512 Bit (64 X8) Serial RTC With Supervisory Functions

The M41ST84W Serial Real-Time Clock is built in a low power CMOS SRAM process. It has a 64- byte memory space with 44 bytes of NVRAM and 20 memory-mapped RTC Registers (see Table 3., page 14). The RTC Registers are configured in binary coded decimal (BCD) format. By STMicroelectronics